A very spicy (peppery and chilli tones), woody vine with a lingering aftertaste used in Northern Lao food. It is slightly numbing to the tongue. Used in Luang Prabang and Luang Namtha provinces in aw lahm, it enhances a dish’s flavour. It is also added to some river weed and taro (bon) dishes. It is an appetite stimulant. It is sold in lengths of very thick vine trunk. Smaller sections – 3 cm x 1 cm (1½ in x ¼ in) – are chopped from the whole with a cleaver immediately before adding the bits to an aw lahm. If not used immediately, it will either dry or go black very quickly. Choose mai sakahn that is not dried out and which is insect-free. Mai sakahn can be kept in the freezer.
The closest substitute for a 3 cm (1½ in) mai sakahn piece is a combination of 1 teaspoon of whole black peppercorns, 5 Sichuan pepper berries (or the local version, mak ken), plus 1 dried red chilli and 1 bitter leaf, such as celery, placed together in a tea infuser and submerged in the stew. Remove the infuser and its contents before serving.